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呈現:
Wireless Personal Communications: The Evolution of Personal Communications Systems
throughout the world, and in the U.S., where as many as 7 licensed wireless service providers may be competing for cellularfPCS...... more |
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Wireless Personal Communications: Improving Capacity, Services, and Reliability
industry that is adding s lbscribers at greater than 50% annual rate. This growth is commonplace for wireless service companies...... more |